CVE-2022-30746
📋 TL;DR
This vulnerability in Samsung SmartThings allows attackers to remotely access sensitive information through a missing caller check in the JavaScript interface API. Attackers can exploit this flaw to retrieve private data from affected SmartThings devices. Users with SmartThings devices running vulnerable firmware versions are affected.
💻 Affected Systems
- Samsung SmartThings Hub
- SmartThings-compatible devices
📦 What is this software?
Smartthings by Samsung
⚠️ Risk & Real-World Impact
Worst Case
Complete compromise of SmartThings ecosystem, allowing attackers to access all connected devices, steal personal data, and potentially control smart home devices.
Likely Case
Unauthorized access to sensitive SmartThings data including device configurations, user information, and potentially connected account credentials.
If Mitigated
Limited exposure if proper network segmentation and access controls are implemented, restricting JavaScript interface access.
🎯 Exploit Status
Exploitation requires JavaScript execution capability but no authentication. The missing caller check makes exploitation straightforward once access is obtained.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.7.85.12 and later
Vendor Advisory: https://security.samsungmobile.com/serviceWeb.smsb?year=2022&month=6
Restart Required: Yes
Instructions:
1. Open SmartThings app 2. Go to Settings 3. Select 'About SmartThings Hub' 4. Check for firmware updates 5. Install version 1.7.85.12 or later 6. Restart hub after update
🔧 Temporary Workarounds
Disable JavaScript Interface
allTemporarily disable JavaScript interface access to SmartThings API
Not applicable - configuration through SmartThings app
Network Segmentation
allIsolate SmartThings hub on separate VLAN with restricted internet access
Configure firewall rules to restrict SmartThings hub network access
🧯 If You Can't Patch
- Isolate SmartThings hub from internet and restrict network access to trusted devices only
- Disable remote access features and use local-only SmartThings functionality
🔍 How to Verify
Check if Vulnerable:
Check SmartThings hub firmware version in app: Settings > About SmartThings HubCheck Version:
Not applicable - version check through SmartThings mobile app onlyVerify Fix Applied:
Confirm firmware version is 1.7.85.12 or higher in SmartThings app📡 Detection & Monitoring
Log Indicators:
- Unusual JavaScript API calls
- Unauthorized access attempts to SmartThings API
- Multiple failed authentication attempts
Network Indicators:
- Unexpected outbound connections from SmartThings hub
- Suspicious API requests to SmartThings endpoints
SIEM Query:
source="smartthings" AND (event_type="api_access" OR event_type="javascript_execution") AND status="unauthorized"